How Institutional Context Affects Degree Production and Student Aspirations in STEM Kevin Eagan, Ph.D.

University of California, Los Angeles January 28, 2010

The Problem

 Higher institutional graduation rates in non-STEM fields relative to STEM fields  Push toward accountability standards  Relative homogeneity among researchers in science, technology, engineering, and mathematics (STEM) careers  Research puts onus on students

Research Questions

Institutions’ STEM Degree Production

  What institutional characteristics affect the production of undergraduate STEM degrees?

What factors contribute to institutions’ efficiency at producing undergraduate STEM degrees?

Students’ Degree Aspirations

   What student characteristics predict student degree aspirations at the end of four years of college?

What institutional characteristics predict student degree aspirations at the end of four years of college?

Do these student and institutional variables have differential effects across specific groups of students?

Theory and Literature: Economic Production Functions

Theory and Literature: Degree Aspirations  Status attainment theory (Blau & Duncan, 1967; Sewell, Haller, & Portes, 1969)  College student socialization (Weidman, 1989)  Primary limitations of degree aspiration studies: operationalization of the dependent variable, under-development of institutional problem, and analytic methods

Methods: Production Function

 Data: Integrated Postsecondary Educational Data System (IPEDS)  Sample: 4-year public and private non profit bachelor’s degree granting institutions (N=1,428) across 4 years  Subsample for additional analyses: 197 public and private, non-profit four-year institutions

Methods: Production Function

 Dependent Variables  DV1: total undergraduate STEM degrees produced each year  DV2 (created from first analysis): production efficiency score for each institution-year case  Independent variables:  Production function: human capital, labor, financial capital  Efficiency analysis: selectivity, structural characteristics, climate elements

Methods: Production Function

 Analyses  Stochastic frontier analysis ○ Decomposes error term into two components: randomly distributed error and non-randomly distributed error (inefficiency) ○ ○ More robust than OLS regression Distinct from data envelopment analysis, as SFA accounts for external shocks to the firm  Hierarchical Linear Modeling ○ Analyze the relative contributors to production efficiency

Production Function Results

 Decreasing returns to scale  Average efficiency score: 40%  Efficiency  Negatively affected by: % PT faculty, % URM students  Positively affected by: % PT students, % STEM students, selectivity

Methods: Degree Aspirations

 Data  Students ○ 2004 Freshman Survey ○ 2008 College Senior Survey ○ National Student Clearinghouse  Institutions ○ IPEDS ○ Student-level aggregates ○ SFA model (efficiency score)  Sample: 5,876 students across 197 institutions

Methods: Degree Aspirations

  Dependent variable: recoded degree aspirations into five categories Independent variables  Background characteristics (2004)      Pre-College characteristics (2004) Connections to peers and faculty (2008) Campus involvement (2008) Campus climate perceptions (2008) Institutional characteristics (2004-2008) ○ Structural characteristics ○ Aggregated climate elements ○ Production efficiency scores from SFA model

Methods: Degree Aspirations

 Analyses  Response weights  Multinomial hierarchical generalized linear modeling ○ Categorical, non-ranked outcome ○ Nested data (students within institutions) ○ Model building

Results: Degree Aspirations – Institutional Predictors Control: Private

Master’s Degree

+

M.D.

HBCU Agg. faculty support Agg. cross-racial interactions Production efficiency + + NS + + + +

J.D.

+

Ph.D.

+ + + + NS NS NS

Results: Degree Aspirations – Individual Predictors

Master’s Degree M.D.

J.D.

Undergraduate research participation Grad school prep. program + + + Faculty support College GPA Find a cure to a health problem Make a theoretical contribution to science Be well-off financially + + + + +

Ph.D.

+ + + + + -

Limitations

 Secondary data analysis  Limited controls for institutional (student and faculty) quality in SFA model  Timeframe of 2004-2008 surveys limits causal inferences  Low longitudinal response rate

Discussion

 Limitation of applying economic theory and efficiency to higher education  Balancing democratic mission of higher education with political and economic realities  Student preparation  Faculty employment  Program duplication and coordination  Engagement with diversity

Implications for Research

 Institutional data  Utility of efficiency scores in higher education  Self-selection bias and causality